﻿# region License
//	The MIT License (MIT)
//
//	Copyright (c) 2015, Cagatay Dogan
//
//	Permission is hereby granted, free of charge, to any person obtaining a copy
//	of this software and associated documentation files (the "Software"), to deal
//	in the Software without restriction, including without limitation the rights
//	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//	copies of the Software, and to permit persons to whom the Software is
//	furnished to do so, subject to the following conditions:
//
//		The above copyright notice and this permission notice shall be included in
//		all copies or substantial portions of the Software.
//
//		THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//		IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//		FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//		AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//		LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//		OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//		THE SOFTWARE.
# endregion License

using System;
using System.Collections.Generic;

namespace Sweet.Jayson
{
	# region JaysonEnumCache

	internal static class JaysonEnumCache
	{
		private static Dictionary<Enum, string> s_EnumNameCache = new Dictionary<Enum, string>();
		private static Dictionary<Enum, string> s_EnumValueCache = new Dictionary<Enum, string>();
		private static Dictionary<Type, Dictionary<string, object>> s_EnumTypeCache =
			new Dictionary<Type, Dictionary<string, object>>();

		public static string AsIntString(Enum enumValue)
		{
			string result;
			if (!s_EnumValueCache.TryGetValue(enumValue, out result))
			{
				result = enumValue.ToString("D");
				s_EnumValueCache[enumValue] = result;
			}
			return result;
		}

		public static string GetName(Enum enumValue)
		{
			string result;
			if (!s_EnumNameCache.TryGetValue(enumValue, out result))
			{
				result = enumValue.ToString("F");
				s_EnumNameCache[enumValue] = result;
			}
			return result;
		}

		public static object Parse(string str, Type enumType)
		{
			Dictionary<string, object> typeDict;
			if (!s_EnumTypeCache.TryGetValue(enumType, out typeDict))
			{
				typeDict = new Dictionary<string, object>();
				s_EnumTypeCache[enumType] = typeDict;
			}

			object result;
			if (!typeDict.TryGetValue(str, out result))
			{
				result = Enum.Parse(enumType, str);
				typeDict[str] = result;
			}

			return result;
		}
	}

	# endregion JaysonEnumCache
}